Added default search path for most recent version of MySQL

Fix #1805

Update the replay maintenance script to allow for rolling replay maintenance along with cleanup of the two associated db tables (replay access and games).  This updated script will now allow players to see the past X days (8 by default) of replays rather than loosing all replays from the point in the the script gets run.

Basic assertions about version updates

Having token set to not null breaks the use of requireemail=false in the servatrice.ini as token will be null in this use case.

fix #1547

It was missing a comma at the end of the line.

Ban based notification to other online moderators is the first form implemented by this PR.

With this update a new chat history definition is added on a per
room bases which allows operators to specify the number of chat
messages to store and present to the user on join.  Please see
the sample ini for room definitions.

This is intended to be an example of using the protocol from something
other than C++ and to be a building block for future test clients.

Use -DPORTABLE=1 to build a portable version

When in none auth mode, registered users don't exist; hence the setting
makes the game impossible to join.

Normally the setting would be greyed out when the user is unregistered,
but commit 475c54bf introduced a new edge case where the stored setting
would apply to the field even if the user is unregistered, making the
setting possible to apply in no-reg mode. Regardless, any client could
have done this, not just the default cockatrice.

The server side fix should prevent all issues in the future.

Schema version should be 7 (not 6) for current commit level.  Not sure exactly why it wasn't updated.